Allow hostname in configuration

[pspeirs]

The problem I and a lot of other people are experiencing is that the AD410 (and assumably other devices) implement a dynamic MAC address alongside the apparent hard coded address. This seems to come to light on restart where a previously unknown MAC appears and is assigned a different IP address to the one that is configured in this component. I have tried configuring the plugin for hostname however it blows up. Best practice is obviously to use DNS over IP address and as such my request is to implement this functionality as it would get around the issue of the plugin breaking every time the IP changed.